mirror of
https://github.com/ZLMediaKit/ZLMediaKit.git
synced 2024-11-23 11:17:09 +08:00
109 lines
3.0 KiB
C++
109 lines
3.0 KiB
C++
/*
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* Copyright (c) 2016 The ZLMediaKit project authors. All Rights Reserved.
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*
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* This file is part of ZLMediaKit(https://github.com/xia-chu/ZLMediaKit).
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*
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* Use of this source code is governed by MIT license that can be found in the
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* LICENSE file in the root of the source tree. All contributing project authors
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* may be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef ZLMEDIAKIT_H264RTPCODEC_H
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#define ZLMEDIAKIT_H264RTPCODEC_H
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#include "Rtsp/RtpCodec.h"
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#include "Extension/H264.h"
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// for DtsGenerator
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#include "Common/Stamp.h"
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namespace mediakit{
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/**
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* h264 rtp解码类
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* 将 h264 over rtsp-rtp 解复用出 h264-Frame
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* rfc3984
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*/
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class H264RtpDecoder : public RtpCodec{
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public:
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using Ptr = std::shared_ptr<H264RtpDecoder>;
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H264RtpDecoder();
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~H264RtpDecoder() {}
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/**
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* 输入264 rtp包
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* @param rtp rtp包
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* @param key_pos 此参数忽略之
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*/
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bool inputRtp(const RtpPacket::Ptr &rtp, bool key_pos = true) override;
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CodecId getCodecId() const override{
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return CodecH264;
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}
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private:
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bool singleFrame(const RtpPacket::Ptr &rtp, const uint8_t *ptr, ssize_t size, uint64_t stamp);
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bool unpackStapA(const RtpPacket::Ptr &rtp, const uint8_t *ptr, ssize_t size, uint64_t stamp);
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bool mergeFu(const RtpPacket::Ptr &rtp, const uint8_t *ptr, ssize_t size, uint64_t stamp, uint16_t seq);
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bool decodeRtp(const RtpPacket::Ptr &rtp);
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H264Frame::Ptr obtainFrame();
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void outputFrame(const RtpPacket::Ptr &rtp, const H264Frame::Ptr &frame);
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private:
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bool _gop_dropped = false;
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bool _fu_dropped = true;
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uint16_t _last_seq = 0;
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H264Frame::Ptr _frame;
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DtsGenerator _dts_generator;
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};
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/**
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* 264 rtp打包类
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*/
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class H264RtpEncoder : public H264RtpDecoder ,public RtpInfo{
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public:
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using Ptr = std::shared_ptr<H264RtpEncoder>;
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/**
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* @param ssrc ssrc
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* @param mtu mtu大小
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* @param sample_rate 采样率，强制为90000
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* @param pt pt类型
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* @param interleaved rtsp interleaved
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*/
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H264RtpEncoder(uint32_t ssrc,
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uint32_t mtu = 1400,
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uint32_t sample_rate = 90000,
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uint8_t pt = 96,
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uint8_t interleaved = TrackVideo * 2);
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~H264RtpEncoder() {}
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/**
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* 输入264帧
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* @param frame 帧数据，必须
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*/
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bool inputFrame(const Frame::Ptr &frame) override;
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/**
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* 刷新输出所有frame缓存
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*/
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void flush() override;
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private:
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void insertConfigFrame(uint64_t pts);
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bool inputFrame_l(const Frame::Ptr &frame, bool is_mark);
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void packRtp(const char *data, size_t len, uint64_t pts, bool is_mark, bool gop_pos);
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void packRtpFu(const char *data, size_t len, uint64_t pts, bool is_mark, bool gop_pos);
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void packRtpStapA(const char *data, size_t len, uint64_t pts, bool is_mark, bool gop_pos);
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private:
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Frame::Ptr _sps;
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Frame::Ptr _pps;
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Frame::Ptr _last_frame;
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};
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}//namespace mediakit{
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#endif //ZLMEDIAKIT_H264RTPCODEC_H
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